Comtech-ef-data RCS20 Manuale Utente Scaricare il pdf (Pagina 88)

RCS20 M:N Redundancy Switch Revision 15

User Interfaces MN-RCS20 and CD-RCS20

4–54

4.3.3 MONITOR/ALARMS Menu Tree

4.3.3.1 EXPANSION SLOT MONITOR

This screen displays the contents of the expansion slots at the rear of the RCU20.

Key Label Function

S1 --- N/A

S2 --- N/A

S3 --- N/A

S4 NEXT Press to cycle to the next screen.

Numeric Keypad --- N/A

4.3.3.2 MOD / DEMOD FAULT MONITOR

This screen displays the fault status of the all prime and backup channel modulators and demodulators.

The fault status each modem is reported to the DDS20 through two open collector connections in the 68-

pin cable between each modem and the DDS20. The logic state of these status lines is then reported to

the RCU20 through the 15-pin high-density serial cable between the DDS20 and the RCU20. The

following letter codes may be used:

EXPANSION SLOT MONITOR

SLOT 0: (EMPTY)

SLOT 1: USER INTERFACE

SLOT 2: BANK CONTROL:(IFS20A, DDS20)

SLOT 3: (EMPTY)

SLOT 4: (EMPTY)

SLOT 5: UNKNOWN TYPE NEXT

MOD / DEMOD FAULT MONITOR

BACKUP : B2 B1

MODEM : 1 2 3 4 5 6 7 8 9 0

CONNECT:md md md md md md md md md md

FAULT :FF ?? FF ?? FF FF ?? ?? FF FF

1 2 ... 83 84 85 86 87 88 89 90 91 92 93 ... 201 202

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Comtech-ef-data RCS20 Manuale Utente Pagina 88